Rubber Wood Farm

A rubber wood farm is one of the commodity industries. In normal mode these are Indestructible.

It will produce raw rubber on a monthly basis, and depending on the amount of rubber trees around.

The rubber wood farm will also upgrade itself on a higher level when their balance is enough to play for the upgrade. The base upgrade time is about 8 weeks and higher production will only occur after completing the upgrade, but it will be able to still produce the normal amount.